Everything in tech is a depreciating asset. If you're talking about GPUs used for mining crypto, yeah - most people run them well below max load, keep temps stable, and pay close attention to their crypto farm. Buying a used crypto farm GPU is great.
If you're talking about purpose-built ASICs, probably still yes? It's not like it's performing some incredibly unique action when farming for crypto.
The secondhand electronics market is fairly strong.